We've already seen the goalposts move when AWS and CDNs were dropping politically unpopular clients.
If it helps, we're already pretty close to the end of the slope. There's a very limited number of last-mile ISPs, so we're only one Twitter mob / protest away from Comcast / Verizon / Cox / AT&T holding press conferences about how they're blocking politically problematic domains and IP addresses. Then it'll only be tech-savvy users with VPNs that can access "free speech," at least until those become the target of the mob, too.